Last Updated： Aggregation Period:Dec 24, 2025～Jan 20, 2026
This ranking is based on the number of page views on our site.
Last Updated： Aggregation Period:Dec 24, 2025～Jan 20, 2026
This ranking is based on the number of page views on our site.
Last Updated： Aggregation Period:Dec 24, 2025～Jan 20, 2026
This ranking is based on the number of page views on our site.
1～15 item / All 15 items
Ideal opening cover
This is a floor hole cover from Yamakou Company that is safe, odor-proof, and rust-proof, designed for easy locking and opening, suitable for water tanks, purification tanks, water treatment facilities, underground inspection openings in buildings, pit openings, and sewer manholes, among others.
When a high-quality opening is required.
The circular LKDC and LKDS stainless steel manhole covers are used for tanks or containers that require a means for access to the interior of the container above the liquid level, and that can be closed.
Synthetic resin! Camouflage for the drainage pipe of the retaining wall.
The "O-type" hole cover camouflages the drainage pipe holes in retaining walls, allowing the drainage function to be utilized without compromising the landscape. Even if sediment accumulates inside the pipe, it is less likely to grow grass, and since it is made of synthetic resin, it will not rust and can be used semi-permanently. Additionally, it can be installed even after construction. It can be easily attached with adhesive. 【Features】 ○ Prevents pranks by keeping stones, empty cans, and bottles out ○ Can be retrofitted and attached with adhesive ○ Excellent corrosion resistance due to synthetic resin ○ Opening area: more than 1/3 of the pipe's cross-sectional area For more details, please contact us or download the catalog.
You can check the internal condition of the container while keeping the manhole closed with a viewing window!
The "SMR-G type" is a SUS-made manhole cover for food and scientific equipment. It has a viewing window, allowing you to check the internal condition of tanks or containers while the manhole is closed. In addition to ensuring reliable material input and other operations, it uses a specially shaped gasket, providing excellent sealing performance to prevent leaks. 【Features】 ■ Equipped with a viewing window ■ Capable of reliably executing tasks such as material input ■ Uses a specially shaped gasket *For more details, please refer to the catalog or feel free to contact us.
Manhole cover used for internal inspections or for the input of raw materials!
The "SMR-F type" is a manhole cover for pressure-free containers made of SUS for food and chemical equipment. It uses a clamp ring, so no tools are required, allowing for one-touch opening and closing of the lid, while also providing excellent sealing properties. Additionally, the clamp ring, lid, and gasket can be easily attached and detached, and there are few welded areas, making cleaning easy. It is installed on the top of tanks or containers and is used for internal inspection or for adding raw materials. 【Features】 ■ No tools required ■ One-touch opening and closing of the lid ■ Excellent sealing properties ■ Easy to clean *For more details, please refer to the catalog or feel free to contact us.
Lightweight type suitable for food tanks that generate internal pressure below 0.148 MPa.
The "SMR-P type" is a manhole cover made of SUS for low-pressure containers used in food and chemical equipment. The opening is circular, making it suitable for the entry and exit of raw materials and for inspection and cleaning. Additionally, it uses a specially shaped gasket, providing excellent sealing performance to prevent leaks. 【Features】 ■ Lightweight ■ Suitable for the entry and exit of raw materials and for inspection and cleaning ■ Excellent sealing performance *For more details, please refer to the catalog or feel free to contact us.
Manhole covers ideal for boilers, high-pressure vessels, and more!
The "LM type" is a manhole cover for SS and SUS high-pressure vessels used in boilers and high-pressure containers. It features a hole in the mirror plate or body that accommodates the outer diameter of the ring, allowing the ring to be inserted and immediately used after corner welds are applied. Additionally, as a standard product, it offers excellent compatibility with cover plates and saddles. 【Features】 ■ Excellent compatibility with cover plates and saddles ■ Ideal for boilers and high-pressure vessels *For more details, please refer to the catalog or feel free to contact us.
Load conditions (safety overload) 1. 5kN to 900kN! Can be used in various situations.
Our company acts as an agent for the high-quality GRP composite manhole covers and trench covers manufactured by OPW Retail Fueling - Fibrelite (UK/Malaysia) for the Japanese market. Fibrelite offers a top-class strength-to-weight ratio, providing lightweight and easy handling while achieving maximum load-bearing strength and durability. The high-performance, lightweight composite covers, including the unique F900 (t90) rated load trench cover, are adopted by users, architects, and engineers around the world in various situations. 【Features】 ■ Selling high-quality GRP composite manhole covers and trench covers as an agent for the Japanese market ■ Load conditions (safety overload) from 1.5kN to 900kN ■ Usable in various situations *For more details, please refer to the PDF document or feel free to contact us.
The goal was "a sense of unity with the sidewalk."
Even if it's too slippery or too grippy, walking becomes difficult... The most walkable option is the pedestrian-only road (sidewalk). The "High Grip Manhole Cover" is designed to match the slip resistance of the sidewalk, allowing for minimal difference in foot sensation, enabling safe passage without being conscious of the manhole cover. Here, you can find a reliable sense of security that supports the city from the ground up. For more details, please contact us or refer to the catalog.
Prevent falling accidents during inspection work! Safety products for secure manhole operations.
■Examples of Accidents During Manhole Work - A passerby walking on the road fell into a hole due to the absence of a manhole cover and sustained serious injuries. ■Impact and Dangers of Manhole Fall Accidents - There is a risk of injury or death to workers and passersby. - It can potentially cause traffic accidents. ■Measures for Safe Manhole Work Manhole work is extremely dangerous. Therefore, appropriate measures are necessary to conduct safe manhole work. Round manhole covers will not fall if they are not damaged, but leaving the cover open during inspections poses a risk of workers falling. Installing fall prevention nets at the manhole opening not only prevents workers from falling into the opening but also ensures a safe working space for them.
A manhole cover series that covers a variety of uses.
Manhole covers with a wide range of lineups. These Type C, Type O, and Type R are stainless steel manhole covers used for tanks or containers, including bottling and cleaning machines.
A manhole cover series that covers a variety of uses.
The oval-shaped stainless steel LKD manhole cover is used as a lid for tanks or containers that require access to the interior. Each cover is designed to meet today's requirements for CIP cleaning and is suitable as a manhole cover when occasional access to the tank for inspection is sufficient.
For inquiries about tank peripheral equipment, please contact Niikura Industries.
◆510 (510F) Gauge Hatch Cover This device is installed at the top of the tank and is used as an insertion point for measuring instruments and sampling tools when measuring the liquid level, checking the temperature, and taking samples inside the tank. ◆520 Manhole Cover This device is installed at the top of the tank and is used as an entrance for inspections inside the tank. The liquid-tightness of the manhole cover for the pontoon manhole, as required by Fire Hazard No. 242, has been verified in accordance with the verification methods outlined in the relevant operational guidelines. Additionally, a report on the liquid-tightness verification test results can be submitted.
Manhole cover for pressureless containers made of SUS for food and chemical equipment.
The "SMR-N type" is a manhole cover installed on the top of a tank, used for internal inspection of tanks or containers, or for material loading, among other purposes. It uses a specially shaped gasket, providing excellent sealing properties to prevent leaks. 【Features】 ■ For unpressurized containers ■ Made of SUS for food and chemical equipment ■ Excellent sealing performance ■ Uses a specially shaped gasket *For more details, please refer to the catalog or feel free to contact us.
Manhole cover suitable for large brewing tanks and storage tanks.
The "SME type" is a manhole cover for SUS pressure vessels used in food and chemical equipment. It is suitable for large brewing tanks and storage tanks, capable of withstanding a water head of 30 meters. Silicone is used for the gasket. 【Features】 ■ Capable of withstanding a water head of 30 meters ■ Ideal for large brewing tanks and storage tanks *For more details, please refer to the catalog or feel free to contact us.
